CDO Doremus here (it's like OCD, but it's in alphabetical order, like it should be!)
I have a small six-ring notebook that's about the size of a filmholder. I made exposure-record pages for it with the table function in Word. Each is about a third of a regular letter-size page in size.
Each page includes: Title, location, date taken, film, film size, date loaded, holder number, a Zone-System worksheet, places for metered exposure, filter factors, bellows-extension factors and reciprocity failure, given exposure, indicated development, target paper grade and room for notes on cropping, etc.
It seems like a lot, but I don't use all the fields all the time. If I'm using a lot of different films, I'll pre-number the exposure records with film type, holder number and loading date. Otherwise, I just enter this info (minus the loading date) at the time of exposure.
Also in my field notebook are tables with reciprocity adjustments for the films I use, bellows-extension factors and a few other things like compensation factors for metering through filters, etc. A pencil lives in the notebook as well.
The exposure record pages are subsequently filed with the negatives in my negative files.
After the initial design of the form, the whole thing is EZPZ. I just print out a few pages, cut and punch them and put them in the exposure record notebook. When I'm on the road, I take a full letter-size page along that I can just make a few copies of at any copy machine if I run out of records.
Best,
Doremus